8371184640 has 704 divisors, whose sum is σ = 33872380416. Its totient is φ = 1717567488.

The previous prime is 8371184561. The next prime is 8371184641. The reversal of 8371184640 is 464811738.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 8371184592 and 8371184601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8371184641) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74081224 + ... + 74081336.

Almost surely, 2^8371184640 is an apocalyptic number.

8371184640 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8371184640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16936190208).

8371184640 is an abundant number, since it is smaller than the sum of its proper divisors (25501195776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8371184640 is a wasteful number, since it uses less digits than its factorization.

8371184640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 196 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 8371184640 is about 91494.1781754446. The cubic root of 8371184640 is about 2030.4656199354.

The spelling of 8371184640 in words is "eight billion, three hundred seventy-one million, one hundred eighty-four thousand, six hundred forty".